code: def p_flag_col(p):
      "flag_col : FLAG_PREFIX flag_name"
      p[0] = Flag(p[2])
  
imports: import yaml
  from guild import _yacc
  from .None import Select, Scalar, Attr, Flag
  from .None import ParseError
  from .None import qlex
label_desc: Use image node_id 18 for calling a global function with example usage: p_flag_col(p) without return types